Which of the following statement is false ?

Options

A. Nissl granules present in gray matter
B. Cyton of motor cranial nerves present in Brain
C. Repair of Nerve is possible
D. Tract connect the CNS to PNS

Answer

To determine which statement is false, we will analyze each statement one by one.

1. **Statement 1**: "Nissl's granules are present in grey matter."
- This statement is **true**. Nissl's granules, which are primarily composed of rough endoplasmic reticulum and ribosomes, are found in the cell bodies (soma) of neurons located in the grey matter of the brain and spinal cord. They play a crucial role in protein synthesis, which is essential for the functioning of neurons.

2. **Statement 2**: "Cytone of motor cranial nerves is present in the brain."
- This statement is also **true**. The term "cytone" refers to the cell body of a neuron. Motor cranial nerves originate from the brain, and their cell bodies are located within the brain itself. Thus, this statement accurately describes the presence of cytone in motor cranial nerves.

3. **Statement 3**: "Repair of nerve is possible."
- This statement is **true**. Nerve repair is possible to some extent, particularly in the peripheral nervous system (PNS). When peripheral nerves are damaged, they can regenerate due to the presence of Schwann cells that facilitate the healing process. However, repair is limited in the central nervous system (CNS).

4. **Statement 4**: "Tract connects the CNS to the PNS."
- This statement is **false**. Tracts are bundles of axons in the CNS that connect different parts of the central nervous system. The peripheral nervous system (PNS) connects the CNS to the limbs, organs, and skin, but tracts themselves do not connect the CNS to the PNS. Instead, they are pathways within the CNS.

Based on the analysis above, the false statement is the fourth one.

**Final Answer**: The false statement is: "Tract connects the CNS to the PNS."

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